Fastening-inserting machine



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FASTENING INSERTING MACHINE Filed June L4. 19:52

1 50 upon the member and holder.

Patented Nov. 6, 1934` UNITED STATES PATENT oFFIcE FASTEN ING -INSERTING MACHINE Application June 14, 1932, Serial No. 617,135

16 Claims.

This invention relates to machines by which fastenings are inserted inWork, it having special utility in connection with machines for nailingheels toI shoes. v

` In machines for attaching heels by securing nails which are drivenfrom the inside through the heel-seat of a shoe into the heel, the nailsare customarily held pointsA up upon the `upper lo extremities ofdrivers reciprocating in passages in a jaclr on which the shoe beingoperated upon is supported. As heels diiTer in height, the length of thesecuring nails varies, and consequently the drivers which are positionedsufficiently low in the jack-passages so the longer nails will not riseabove the jack-top will, when short nails are used, cause their pointsto lie initially considerably below the openings of the driver-passages.l-lere, they will be where they cannot be seen by the operator and itcannot readily be` determined Whether the passages have received a fullload. As a result of this, `all the securing nails may not be driven,causing the Work to be imperfect. This may also affect the operators,since in some shops they are fined for missed nails. Further, as theshorter nails rise under the influence of the drivers, there is aninterval during which there is nothing to prevent the points from beingdisplaced one Way or another in the passages, so they may enter the Thisis most objectionable when the ends of the drivers areV heel-seat atuncertain angles.

inclined to direct the nails inwardly, to prevent their points fromemerging through the Walls of heavily pitched or tapered heels. Insteadof being inserted at the desired inward angles, `the displacement of thenails, while they are loose and uncontrolled, may cause them to break`through the heel-walls.

nails or other fastenings, whatever may be their length, that theirpoints will be initially under" the observation of the operator andready to engage the work as soon as their inserting movement starts.This object I attain, in a fastening-inserting machine broadly, byassociating with a work-support and co-operating reciprocatory actuatingmember, a ho-lder fora fasteningdriver yieldable upon the actuatingmember and also moved positively by the contact of surfaces To cause thearrangement to operate properly upon fastenings of different lengths,means is provided for varying the normal distance between `thecontactsurfaces just mentioned, thus bringing the points cf aufastenings into the desired relation. in

the fastenings are driven after the plungerand It is an object of myinvention to so position addition to this adjustment, the extent offorward movement of the actuating member may oe varied, this determiningthe depth to which holder-surfaces have come into engagement. When theinvention is applied to a heel-attaching machine, the work-support maytake the form of a jack provided with passages, a plunger reciprocatingin the jack and having yieldable upon it a holder carrying drivers whichoperate in the jack-passages. In this relation, there is believed to benovelty in the yieldability of the holder and drivers, regardless ofpositive actuation. v In the embodiment of the invention here- 1nillustrated, a spindle is guided in the reciprocatory plunger and hasnail-drivers mounted upon it, there being a spring interposed betweenthe spindle and plunger. As the spring yields, Contact between surfacesmoving with spindle and plunger, respectively, causes the drivers to bepositively actuated for the insertion of the nails; The drivers areshown as mounted upon a4 holder threaded on the spindle to obtain avariation in the space between the contactsurfaces and thus in thenormal location of the nail-points, While the plunger may consist ofrelatively movable sections adjustable to determine the depths to whichthe nails are driven. In the various embodiments of the invention, theends of the drivers which engage the nails are 8 preferably inclinedforl the reason already pointed out, and the adjustment of the driver ordrivers insures the engagement of the Work,

by the nails before their inclined relation is disturbed. 99

In the accompanying drawing,

Fig. 1 illustrates one possible form of the jack of my invention inbroken side elevation;

Fig. 2 is an enlarged vertical section on theV line II'-II of Fig. 1;and "i Fig'. 3, a broken side elevation of the jacktop.

At l0 appears a fragment of the frame of a heel-attaching machine, whichmay be generally similar to that of Letters Patent of the United StatesNo. 1,545,575, Standish, July 14, 1925. From the frame rises a casing orbody-portion 1270i a jack J arranged to support shoes'when heels arelbeing attached by nails driven from within said shoes. Guided to movevertically in the casing is a plunger or actuating memberl4'r'eciprocated through'a stroke of unvarying length by mechanism suchas that of the Standish patent. 'lhe'plunger is shown vas sectional, itslower main portion having an upward extension 16, to which is connectedby a right-andleft threaded coupling 18 an end-section 20. A lock-nut22, threaded upon the extension, contacts with the coupling to retain itin the position to which, by its rotation, it may have adjusted thesection 20. The purpose of this change in the length of the plunger willbe later explained. The plunger-section 20 contains upper and loweraxial bores 24 and 26, respectively, divided by a horizontal partition28, in which is a reduced axial bore or opening 30. Movable in theplunger-bores is a spindle 32, which may be guided in the opening 30.The spindle is shown as having at its lower extremity a head orenlargement 34 moving freely in the bore 26 and limited in its upwardtravel by engagement with the partition 28. At the top of the spindle isa second enlargement, preferably in the form of a sleeve 36 threaded at38 upon the body of the spindle and having a sliding fit in the bore 24.The sleeve above the plunger is extended laterally to furnish a plate orholder 4i), in which nail-drivers 42 are secured, these drivers movingin passages 44 in the jack-top 46. As is best illustrated in Fig. 3, theupper ends of the drivers are inclined at 48 so they diverge downwardlyand inwardly from the work-supporting surface 50 of the jack-top. As theheads of the nails, appearing at N in the passages 44, rest upon thesesurfaces 48, the Shanks are inclined inwardly, bringing the points tothe inner sides of the openings in the jack-top.

At the under side of the holder 40 is a horizontal surface 52, which maycontact with an opposed surface 54 on the upper extremity of theplunger-section 20. When the surfaces are thus engaged, the plunger andholder move upwardly together as a unit. Normally, however, the surfacesare separated by the action of a spring 56 surrounding the spindle 32 inthe bore 24, it being interposed between the lower end of the sleeve 86and the plunger-partition 28. The head 34 of the spindle limits theextent of separation between the surfaces 52 and 54 under the influenceof the expansion of the spring 56. The distance between the surfacesdetermines the location of the upper extremities of the drivers 42, and,therefore, of the points of the nails N thereon. To bring said pointsinto the desired relation to the jack-top-openings, the sleeve 36 withthe driver-plate 40 is adjustable upon the spindle. This may beaccomplished by rotatingr the spindle 32 by a tool applied to a slot 58in its upper end. The sleeve is held.- against rotation by a projection60 from the section 20 of the plunger, this entering a longitudinal slot62 in the sleeve. This engagement both holds the drivers 42 in properalinement with the jack-top-passages 44 and, by preventing rotation ofthe sleeve, causes said sleeve and the plate 40, when the spindle isturned as just described, to move longitudinally of said spindle toeither raise or lower the ends of the drivers. A locknut 64 upon thethreaded portion 38 of the spindle may be forced against the bottom of arecess 66 in the plate or holder and in which the slotted end of thespindle is situated. This secures the elements in their adjustedrelation.

To describe the use of my invention, the length of the plunger 14 willhave been initially so adjusted by turning the coupling 18 that the endsurfaces 48 of the drivers 42 will, when the driver-holder-surfaces 52and the plunger-surface 54 are in contact, move sufficiently above thesurface 50 of the jack-top to sink the nailheads to the desired depth inthe insole of the shoe being operated upon. Assuming that the work is tobe changed so nails of diiferent lengths are to be used, the lock-nut 64is loosened and the spindle 32 turned in the direction necessary toeither raise or lower the plate 4G and its drivers until the points ofthe nails upon said drivers are in close proximity to the surface 50 ofthe jack-top. This adjustment of the normal driver-position ismaintained by tightening the nut 64. A load of nails having beensupplied to the passages 44, the operator can at a glance see whether ornot said load is complete. When the heeling machine is started by theoperator, all the nails, Whatever their length, are at once forced bythe elevation of the drivers against the insole of the jacked shoe underthe influence of the force of the rising plunger 14 transmitted throughthe spring 56 to the plate 46. Consequently, the nail-points are causedto somewhat enter the insole and are held between it and thedriver-surfaces 48 against lateral displacement. This is of particularimportance when nails are to be toed in by the inclination of thesedriver-surfaces, because, in absence of this control of the nails, thejar of the machine might so tilt them .that they would not rest againstthe inner surfaces of the passages but would become oppositely inclinedand be driven out through the peripheral wall of the heel. As the spring56 is compressed by the continuing upward movement of the plunger, thesurface 54 of the latter reaches the plate-surface 52, causing thelatter to be moved positively to insert the nails to a depth determinedby the length of the plunger as fixed by the adjustment of the sleeve18.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is:

l. In a fastening-inserting machine, the combination with awork-support, of a reciprocatory actuating member co-operatingtherewith, and a holder for a fastening-driver yieldable upon themember, the holder and member having surfaces contacting during thetravel of the member to effect a positive movement of the holder.

2. In a fastening-inserting machine, the combination with awork-support, of a reciprocatory actuating member holder for afastening-driver yieldable upon the member, the holder and member havingsurfaces contacting during the travel of the member to effect a positivemovement of the holder, and means arranged to vary the normal distancebetween said surfaces.

3. In a fastening-inserting machine, the combination with awork-support, of a reciprocatory actuating member co-operatingtherewith, a holder for a fastening-driver yieldable upon the member,the holder and member having surfaces contacting during the travel ofthe member to effect a positive movement of the holder, means arrangedto vary the normal distance between said surfaces, and means arranged tovary the extent of forward movement of the plunger.

4. In a fastening-inserting machine, the combination with avwork-support provided with driver-passages, of a plunger reciprocatingin said support, a holder yieldable upon the plunger, the holder andplunger having surfaces contacting during the travel of the plunger toeffect the positive movement of the holder, drivers fixed in the holderand operating in the support-passages, and means arranged toadcoeoperating therewith, a n

just one of the surfaces toward and from the other.

5. In a fastening-inserting machine, the combination with a work-supportprovided with driver-passages, of a plunger vreciprocating in saidsupport, a holder yieldable upon the plung er, and drivers xed in theholder and operating in the support-passages.

6. In a fastening-inserting machine, the combination with a work-supportprovided with driver-passages, of a plunger reciprocating in saidsupport, a holder yieldable upon the plunger, and drivers fixed in theholder and operating in the support-passages, the plunger and holderhaving `means for limiting the extent of yield of the holder.

'7. In a heel-attaching machine, a jack provided with passages, aplunger reciprocating in the jack, a holder yieldable upon the plunger,and nail-drivers fixed in the holder and operating in the jack-passages.

8. In a heel-attaching machine, a jack having a topy provided withpassages, a plunger reciprocating in the jack, a holder carried by theplunger, nail-drivers fixed in the holder and operating in thejack-toppassages, and means arranged to move the holder upon the plungerto adjust the relation of the points of the nails to the openings of thepassages.

9. The, combination with a jack, of a plunger reciprocating therein, aspindle guided in the plunger, drivers mounted on the spindle, and aspring interposed between the spindle and plunger.

10. The combination with a jack, of a plunger reciprocating therein, aspindle guided inthe plunger, a holder threaded upon the spindle,drivers fixed in the holder, and a spring interposed between the spindleand plunger.

11. The combination with a jack, of a plunger reciprocating therein, aspindle guided in the plunger, a holder threaded upon the spindle,drivers Xed in the holder, and a spring interposed between the spindleand plunger, there being surfaces upon the holder and plunger contactingto positively actuate the drivers as the spring yields.

1,2. The combination with a jack, of a plunger reciprocating therein, aspindle guided in the plunger and havng spaced enlargements, a holderthreaded upon the spindle, drivers fixed in the holder, and a springinterposed between one of the spindle-enlargements and the plunger andacting to force the other enlargement into normal engagement with theplunger.

13. The combination with a jack, of a sec tional plunger reciprocatingtherein, means arranged to vary the relation of the plunger-sections toeach other, a driver-holder and drivers carried thereby, and means formounting the holder upon one of the plunger-sections for movementlongitudinally thereof.

14. The combination with a jack, of a sectional plunger reciprocatingtherein, means arranged to vary the relation of the plunger-sec-` tionsto each other, a spindle movable in one of the plunger-sections, adriver-holder threaded upon the spindle, and a spring interposed betweenthe spindle and plunger.

15. In a heel-attaching machine, the combination with a jack having atop provided with a passage, of a plunger reciprocating in the jack, aholder yieldable upon the plunger, a driver mounted upon the holder andhaving an inclined end movable in the passage, and means arranged tovary' the normal position of the holder upon the plunger.

16. In a heel-attaching machine, the combination with a jack having atop provided with a passage, of a plunger reciprocating in the jack, aholder carried by the plunger, a driver mounted upon the holder andhaving an inclined end movable in the passage, and means arranged tovary the normal position of the holder upon the plunger.

WHEELER MINARD.

